Tests for TechV2.validate
Tests for TechV2.getCreateResults()/getBuildResult()
Add tests for the rest Tech public methods

createByDecl/buildByDecl still left without a tests - update to
q-io/fs is required.
Initialize chai-as-promised in separate module
Fix tests for node v0.6
Use mocha-as-promised
Shorten initialization code
Merge pull request #454 from bem/feature/base-tech-tests

Tests for base tech module API v2